Articulation is the ultimate validation of thinking. If you cannot put an idea into words, in writing, in speech, in a prompt to an LLM, it means either the thought was never concluded or you haven’t truly understood it yet. The act of verbalizing forces precision: vague intuitions must become concrete claims, and the gaps reveal themselves. This is why writing is thinking, not merely its record. It is also why a rich and consistent vocabulary matters, it is the interface through which your mind retrieves and connects what it knows.